7800521472 has 108 divisors (see below), whose sum is σ = 22549583784. Its totient is φ = 2593382400.

The previous prime is 7800521467. The next prime is 7800521479. The reversal of 7800521472 is 2741250087.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (7800521479) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 919683 + ... + 928125.

Almost surely, 2^7800521472 is an apocalyptic number.

7800521472 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7800521472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11274791892).

7800521472 is an abundant number, since it is smaller than the sum of its proper divisors (14749062312).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7800521472 is a wasteful number, since it uses less digits than its factorization.

7800521472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8866 (or 8849 counting only the distinct ones).

The product of its (nonzero) digits is 31360, while the sum is 36.

The square root of 7800521472 is about 88320.5608677843. The cubic root of 7800521472 is about 1983.2366773946.

The spelling of 7800521472 in words is "seven billion, eight hundred million, five hundred twenty-one thousand, four hundred seventy-two".